Clear simple instructions for users to explain interface

[wcornwell]

Since this is pretty new, we need to explain to users to click on families (and whatever other functionality we want)

[johnWilshire]

I could try something like http://introjs.com/ ? or would we want a button that users can click and then they scroll to a instructions section? or both?

[wcornwell]

I like introjs

[johnWilshire]

@wcornwell done in ff00a3c but the tutorial content needs review i think